if you don't do trading you will not increase your amount of bitcoin, if you just hold you will only increase the fiat value of your coin, i think the OP want to increase is amount also, i would suggest to invest in altcoin best revenue for now
In my opinion, there are millions of things to do with bitcoin, its just like what can I do with money? I have a lot of things to do with it. So far Bitcoin can be converted to FIAT then there is no limitation in what one can do with it... But if you still want to keep it as coin then you can trade it to make more, keep it for its value to increase or even gamble it is another option
i agree but one should look at the most profitable investment, with the less risk and the faster roi, and i think the altcoin scene or bitcoin trading are the way to go, other investment outside of cryptoworld are really too slow, and the fiat world the % returned is very low comapred to here